递等式计算(怎样简便就怎么计算)13÷(23-25)13×34÷(34-512)67×65-67÷56÷310-310÷6364849×1474÷(23+12)×45.-数学

题目简介

递等式计算(怎样简便就怎么计算)13÷(23-25)13×34÷(34-512)67×65-67÷56÷310-310÷6364849×1474÷(23+12)×45.-数学

题目详情

递等式计算(怎样简便就怎么计算)
1
3
÷(
2
3
-
2
5

1
3
×
3
4
÷(
3
4
-
5
12

6
7
×
6
5
-
6
7
÷5
3
10
-
3
10
÷6
36
48
49
×
1
4

7
4
÷(
2
3
+
1
2
)×
4
5
题型:解答题难度:中档来源:不详

答案

(1)class="stub"1
3
÷(class="stub"2
3
-class="stub"2
5

=class="stub"1
3
÷class="stub"4
15

=1class="stub"1
4


(2)class="stub"1
3
×class="stub"3
4
÷(class="stub"3
4
-class="stub"5
12

=class="stub"1
3
×class="stub"3
4
÷class="stub"1
3

=class="stub"1
4
÷class="stub"1
3

=class="stub"3
4


(3)class="stub"6
7
×class="stub"6
5
-class="stub"6
7
÷5
=(class="stub"6
5
-class="stub"1
5
)×class="stub"6
7

=1×class="stub"6
7

=class="stub"6
7


(4)6÷class="stub"3
10
-class="stub"3
10
÷6
=20-1.8
=18.2;

(5)36class="stub"48
49
×class="stub"1
4

=36×class="stub"1
4
+class="stub"48
49
×class="stub"1
4

=9+class="stub"12
49

=9class="stub"12
49


(6)class="stub"7
4
÷(class="stub"2
3
+class="stub"1
2
)×class="stub"4
5

=class="stub"7
4
÷class="stub"7
6
×class="stub"4
5

=class="stub"3
2
×class="stub"4
5

=1class="stub"1
5

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